Puberty is when a girl grows up into a young woman. Every girl goes through it, but it can be a tough time but "Your Body Rules" book will help you. This book Puberty Definition, Stages of What Happens to Girls, What Are the Signs of Puberty in Girls?, Symptoms of Acne, Early or Delayed Puberty, Healthy Eating During Adolescence, Peer Pressure Goes How to Keep Social Media A Positive Influence, Emotional Changes During 6 Things You Might Notice!, and Advice to Puberty (And 6 Tips for Navigating Puberty).